Seldon's Compendium of Starcraft 2 is a supplement for Space Opera. This 48 page sourcebook provides information on starships of war for the Azuriach Imperium, Galactic Peoples' Republic, Mercantile League, and United Federation of Planets. It includes a glossary and scale deck plans (smaller ships only), specifications, and comments for a large variety of military ship classes, from starfighters to battlestars.